Storage tunnel will improve Narragansett Bay water quality

During the past decade, the Narragansett Bay Commission has reduced by nearly two-thirds the combined sewer overflows to critical waterways in Rhode Island. Much of this reduction resulted from the 2008 completion of a 3 mile long tunnel capable of storing and conveying millions of gallons of combined sewer overflows (CSOs) to a wastewater treatment facility. Earlier this year, the NBC embarked on the next phase of its ambitious, long-term effort to reduce CSOs — the construction of a second tunnel.

Upon its completion in 2027, the 2.2 mi long Pawtucket Tunnel and its related components will enable the commission to improve regional water quality even further.

Read the full article in Civil Engineering.